Taco taco 2400 series high capacity circulators are specifically designed for quiet, efficient, dependable operation in a wide range of medium to high flow/ head hydronic heating, chilled water cooling and hot water recirculation applications. The space saving, close-coupled, maintenance free motor with permanently lubricated, sealed-for-life bearings, stainless steel shaft, noryl impeller and durable, carbon/silicon-carbide mechanical seal provide unmatched reliability.